Amoxicillin
Kesium is a brand-name veterinary antibiotic medication used to treat bacterial infections in dogs and cats. It contains the active ingredient cephalexin, a cephalosporin-class antibiotic that works by inhibiting bacterial cell wall synthesis. This medication is commonly prescribed for skin, respiratory, and urinary tract infections in companion animals.
Kesium is a veterinary antibiotic used to treat bacterial infections in pets.
Key facts at a glance
- RxNorm
- 2697440
- Generic
- Kesium
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Kesium is used to treat various bacterial infections in dogs and cats, including skin infections (such as pyoderma), wound infections, respiratory tract infections, and urinary tract infections caused by susceptible organisms.
As a cephalosporin antibiotic, Kesium interferes with bacterial cell wall synthesis by inhibiting the transpeptidation step, leading to weakened cell walls and bacterial cell death. It is effective against many gram-positive and some gram-negative bacteria.
Kesium should only be used under veterinary supervision. Possible side effects may include gastrointestinal disturbances such as vomiting or diarrhea. Animals with known hypersensitivity to penicillin or cephalosporin antibiotics should avoid this medication. Always complete the full prescribed course of treatment and do not share this medication between animals.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy